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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#include "APZCTreeManagerTester.h"
#include "APZTestCommon.h"
#include "InputUtils.h"
#include "mozilla/StaticPrefs_layout.h"
class APZCSnappingOnMomentumTesterMock : public APZCTreeManagerTester {
public:
APZCSnappingOnMomentumTesterMock() { CreateMockHitTester(); }
};
TEST_F(APZCSnappingOnMomentumTesterMock, Snap_On_Momentum) {
const char* treeShape = "x";
LayerIntRect layerVisibleRect[] = {
LayerIntRect(0, 0, 100, 100),
};
CreateScrollData(treeShape, layerVisibleRect);
SetScrollableFrameMetrics(root, ScrollableLayerGuid::START_SCROLL_ID,
CSSRect(0, 0, 100, 500));
// Set up some basic scroll snapping
ScrollSnapInfo snap;
snap.mScrollSnapStrictnessY = StyleScrollSnapStrictness::Mandatory;
snap.mSnapportSize =
CSSSize::ToAppUnits(layerVisibleRect[0].Size() * LayerToCSSScale(1.0));
snap.mSnapTargets.AppendElement(ScrollSnapInfo::SnapTarget(
Nothing(), Some(0 * AppUnitsPerCSSPixel()),
CSSRect::ToAppUnits(CSSRect(0, 0, 10, 10)), StyleScrollSnapStop::Normal,
ScrollSnapTargetId{1}));
snap.mSnapTargets.AppendElement(ScrollSnapInfo::SnapTarget(
Nothing(), Some(100 * AppUnitsPerCSSPixel()),
CSSRect::ToAppUnits(CSSRect(0, 100, 10, 10)), StyleScrollSnapStop::Normal,
ScrollSnapTargetId{2}));
ModifyFrameMetrics(root, [&](ScrollMetadata& aSm, FrameMetrics&) {
aSm.SetSnapInfo(ScrollSnapInfo(snap));
});
UniquePtr<ScopedLayerTreeRegistration> registration =
MakeUnique<ScopedLayerTreeRegistration>(LayersId{0}, mcc);
UpdateHitTestingTree();
RefPtr<TestAsyncPanZoomController> apzc = ApzcOf(root);
TimeStamp now = mcc->Time();
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
PanGesture(PanGestureInput::PANGESTURE_START, manager, ScreenIntPoint(50, 80),
ScreenPoint(0, 2), now);
mcc->AdvanceByMillis(5);
apzc->AdvanceAnimations(mcc->GetSampleTime());
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
PanGesture(PanGestureInput::PANGESTURE_PAN, manager, ScreenIntPoint(50, 80),
ScreenPoint(0, 25), mcc->Time());
mcc->AdvanceByMillis(5);
apzc->AdvanceAnimations(mcc->GetSampleTime());
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
PanGesture(PanGestureInput::PANGESTURE_PAN, manager, ScreenIntPoint(50, 80),
ScreenPoint(0, 25), mcc->Time());
// The velocity should be positive when panning with positive displacement.
EXPECT_GT(apzc->GetVelocityVector().y, 3.0);
mcc->AdvanceByMillis(5);
apzc->AdvanceAnimations(mcc->GetSampleTime());
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
PanGesture(PanGestureInput::PANGESTURE_END, manager, ScreenIntPoint(50, 80),
ScreenPoint(0, 0), mcc->Time());
// After lifting the fingers, the velocity should be zero and a smooth
// animation should have been triggered for scroll snap.
EXPECT_EQ(apzc->GetVelocityVector().y, 0);
apzc->AssertStateIsSmoothMsdScroll();
mcc->AdvanceByMillis(5);
apzc->AdvanceAnimations(mcc->GetSampleTime());
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
PanGesture(PanGestureInput::PANGESTURE_MOMENTUMSTART, manager,
ScreenIntPoint(50, 80), ScreenPoint(0, 200), mcc->Time());
mcc->AdvanceByMillis(10);
apzc->AdvanceAnimations(mcc->GetSampleTime());
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
PanGesture(PanGestureInput::PANGESTURE_MOMENTUMPAN, manager,
ScreenIntPoint(50, 80), ScreenPoint(0, 50), mcc->Time());
mcc->AdvanceByMillis(10);
apzc->AdvanceAnimations(mcc->GetSampleTime());
QueueMockHitResult(ScrollableLayerGuid::START_SCROLL_ID);
PanGesture(PanGestureInput::PANGESTURE_MOMENTUMEND, manager,
ScreenIntPoint(50, 80), ScreenPoint(0, 0), mcc->Time());
apzc->AdvanceAnimationsUntilEnd();
EXPECT_EQ(100.0f, apzc->GetCurrentAsyncScrollOffset(
AsyncTransformConsumer::eForEventHandling)
.y);
}
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